A curated reader
Andreessen & Gurley
Essays worth reading
A small, hand-picked library of the sharpest writing on technology, startups, software, and markets from two of the field's most original thinkers. Read the summaries here; follow the link to read each piece at its source.
Start readingMarc Andreessen
Co-founder of Netscape and the venture firm Andreessen Horowitz. One of the most influential voices in technology, known for big-picture essays on software, startups, and techno-optimism. His historical personal blog was pmarca; today much of his writing lives at a16z.com.
pmarca · a16z.comBill Gurley
General Partner at Benchmark and one of the most respected venture capitalists of his generation. Author of the long-running blog Above the Crowd, famous for deep, rigorous essays on marketplaces, valuation, unit economics, and market structure.
Above the CrowdTen essays worth your evening
Why read this
Sprawling, citation-dense, and deliberately combative, this is the fullest statement of Andreessen's worldview. It reads less like an essay than a creed: a long enumeration of beliefs about growth, markets, energy, and intelligence as the drivers of human flourishing. Agree with it or not, it is the clearest document of a particular strain of Silicon Valley conviction, and worth reading precisely because it refuses to hedge.
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Published in the first weeks of the pandemic, this is Andreessen at his most urgent and least technical. The complaint is simple and uncomfortable: we have the wealth and the know-how to build housing, hospitals, transit, and tools, and yet we don't. The essay is less a policy program than a provocation - an insistence that the inability to build is a choice, and that choosing otherwise is the work in front of us.
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A sequel of sorts to his marketplace framework, this essay zooms out to the economics. Gurley argues that great marketplaces don't just redistribute existing activity - they conjure new supply and new demand that simply could not exist before, from spare rooms to spare hours. Richly footnoted and historically grounded, it is the best single explanation of why these businesses can be so structurally valuable.
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Long before down rounds became a headline, Gurley sounded the alarm on the structural rot inside sky-high private valuations. He dissects the dirty terms - ratchets, liquidation preferences, guaranteed IPO returns - that let paper valuations climb while the real economics decay underneath. A sober, detailed warning that read as contrarian in 2016 and looks like foresight now.
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Written when a prominent critic pegged Uber's market at a fraction of its eventual size, this is Gurley's case for why static TAM estimates fail. The core insight: a genuinely better product doesn't just take share of an existing market, it grows the market by changing behavior. As an investor in Uber he had skin in the game, but the reasoning about elasticity and new demand outlasts the specific debate.
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Gurley took the fuzzy intuition that some marketplaces are far better businesses than others and turned it into a checklist: network effects, fragmentation, payment flow, frequency, and more. The result is the analytical lens that a generation of marketplace founders and investors still reach for. If you want to understand why some two-sided businesses compound and others stall, this is the foundational text.
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Written as Netscape's co-founder turned investor, this is the argument that reframed how a generation thought about technology: not as a sector, but as the force quietly absorbing every other one. Andreessen walks through industry after industry - retail, media, logistics, finance - to show how the best new companies in each are, at their core, software companies. If you read one essay to understand the logic behind modern venture investing, start here.
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Everyone wants a high multiple; few can explain what earns one. Gurley lays out the qualitative attributes that separate a dollar of premium revenue from an ordinary one: sustainable advantage, network effects, customer lock-in, gross margins, marginal profitability, and more. It remains one of the clearest antidotes to lazy valuation by comparison, and a useful discipline for anyone tempted to value a company on revenue alone.
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The companion to the startup guide, aimed at the individual rather than the company. Andreessen argues against the comfortable advice to follow your passion and for something colder and more useful: build skills that compound, put yourself where opportunity is densest, and take seriously that luck favors those in motion. Pragmatic, occasionally bracing, and still relevant to anyone deciding what to do next.
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Before a16z, Andreessen wrote a blog that founders passed around like samizdat. This series is the heart of it. The most-quoted installment - that the only thing that matters is getting to product/market fit - has aged into received wisdom, but the rest of the guide on hiring, executives, and when not to raise money is just as sharp. Operating advice from someone who had built and sold real companies.
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